Remove tests for removed ARGUMENT_LIST suggestions.

Comments

Remove tests for removed ARGUMENT_LIST suggestions.
It was removed for https://github.com/dart-lang/sdk/issues/25197
This CL though does not remove it everywhere though.
There are 41 other references in tests, doing:
assertNoSuggestions(kind: CompletionSuggestionKind.ARGUMENT_LIST);
Maybe we should remove these as well?
R=brianwilkerson@google.com
Change-Id: I812a2d6900e8430e5808a5a5cd8285b32d1517d6
Reviewed-on: https://dart-review.googlesource.com/c/92620
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>